Contact Us
Navajo Nation Environmental Protection Agency • Public Water Systems Supervision Program
PWSSP Staff
NAME
 POSITION
 PHONE
Yolanda Barney
 Environmental Program Manager
 871-7715
Merle Chischilly
 Senior Environmental Specialist
 871-7891
Elisa Arviso
 Senior Hydrologist
 871-7893
Delfred Gene
 Civil Engineer
 871-6789
Wendell Murphy
 Civil Engineer
 871-7758
Darren Begay
 Civil Engineer
 871-7766
Mark Toledo
 Associate Civil Engineer
 871-7758
Philbert Morgan
 Environmental Specialist
 871-7752
Dawn Begay
 Environmental Specialist
 871-7943
Michelle K. Silver
 Environmental Specialist
 871-7759
Valerie Tannie
 Program & Projects Specialist
 871-7757
Melody Becenti
 Information System Technician
 871-7754
Philbert Yazzie
 Senior Office Specialist
 871-7755
Shileen Livingston
 Office Specialist
 871-7600
Rhonda Notah
 Office Specialist
 871-7753
Our office is located in the Old Museum Building between the Dean C. Jackson Arena and Gorman Hall on
the Navajo Nation Fairgrounds on State Route 264 in Window Rock, Arizona.
Contact
Information
Shipping Address

HWY 264, Navajo
Nation Fairgrounds
Old Museum Bldg
(Bldg # W008-042)
Window Rock, AZ
86515
Mailing Address

Post Office Box 339
Window Rock, AZ
86515
**NEW**

How can we improve our service?
We welcome and value your comments and suggestions about our service to the Navajo Nation for
which we are here to ensure the safety of your drinking water with diligence and respect to all of our
clientele and the community. Your views help us understand the needs and shortfalls of our program so
that we may improve our services to you.

If you have comments or suggestions, or think we could improve any aspect of our service, please let us
know. It is also good to know when you think we have done something well or you were impressed by
the service we provided.

Privacy statement
NNEPA-PWSSP respects your right to privacy and we value the trust you place in us to handle your
information, whether it be confidential or sensitive. The information you have provided will be used for
the purpose for which you have provided. Note that compliments will be passed on to our staff
member(s) and our Program Manager.
Questions, comments, or feedback:
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